Thread: A&P 121 tubing
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Old 20 January 2009, 07:24 AM   #7
JoeP
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Quote:
Originally Posted by '14-'18aviationcollector View Post

I have heard some stories about the harder steels / alloys / other metals being more prone to fatigue and failure than mild steel, which whilst soft is more flexible. Is this correct? As I say, please forgive me if I am completely off track, I will have a look at the factory drawings when I get back home - well, where I am staying that is.

I hope you don't mind me asking. Cheers,

David.
David,

My suspicion is that I will have to squeeze a section of mild steel for the center section, I don't believe the 4130 will form the required curves.
I will use the 4130 sections for the straight portions on the wings.